fastnetmon-rewritten/.github/workflows/check-fmt-release.yml

name: Check for new fmt release

on:
  schedule:
    # Run daily at 06:00 UTC
    - cron: '0 6 * * *'
  workflow_dispatch:

permissions:
  contents: read
  issues: write

jobs:
  check-fmt:
    runs-on: ubuntu-latest
    steps:
      - name: Get latest fmt release
        id: latest
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          latest=$(curl -fsSL \
            -H "Authorization: Bearer ${GH_TOKEN}" \
            -H "Accept: application/vnd.github+json" \
            https://api.github.com/repos/fmtlib/fmt/releases/latest | jq -r .tag_name)
          if [ -z "$latest" ] || [ "$latest" = "null" ]; then
            echo "::error::Failed to fetch latest fmt release tag"
            exit 1
          fi
          echo "latest=$latest" >> "$GITHUB_OUTPUT"
          echo "Latest fmt release: $latest"

      - name: Check for existing issue
        id: existing
        env:
          GH_TOKEN: ${{ github.token }}
          LATEST: ${{ steps.latest.outputs.latest }}
          REPO: ${{ github.repository }}
        run: |
          title="New fmt release available: ${LATEST}"
          # Search both open and closed issues so we do not reopen / duplicate
          # an already-acknowledged release notification.
          query=$(jq -rn --arg repo "$REPO" --arg title "$title" \
            '"repo:\($repo) is:issue in:title \"\($title)\""')
          count=$(curl -fsSL -G \
            -H "Authorization: Bearer ${GH_TOKEN}" \
            -H "Accept: application/vnd.github+json" \
            --data-urlencode "q=${query}" \
            https://api.github.com/search/issues | jq -r '.total_count')
          echo "Matching issues found: $count"
          echo "count=$count" >> "$GITHUB_OUTPUT"
          echo "title=$title" >> "$GITHUB_OUTPUT"

      - name: Create issue for new fmt release
        if: steps.existing.outputs.count == '0'
        env:
          GH_TOKEN: ${{ github.token }}
          LATEST: ${{ steps.latest.outputs.latest }}
          REPO: ${{ github.repository }}
          TITLE: ${{ steps.existing.outputs.title }}
        run: |
          body=$(cat <<EOF
          A new release of [fmtlib/fmt](https://github.com/fmtlib/fmt) has been published.

          - Latest version: \`${LATEST}\`
          - Release notes: https://github.com/fmtlib/fmt/releases/tag/${LATEST}

          Please consider updating the bundled fmt version in this repository.

          _This issue was created automatically by the \`check-fmt-release\` workflow. Close it once the update has been handled (or acknowledged) — it will not be reopened for the same version._
          EOF
          )
          curl -fsSL -X POST \
            -H "Authorization: Bearer ${GH_TOKEN}" \
            -H "Accept: application/vnd.github+json" \
            "https://api.github.com/repos/${REPO}/issues" \
            -d "$(jq -n --arg title "$TITLE" --arg body "$body" \
              '{title:$title, body:$body, labels:["dependencies"]}')"
          echo "Opened issue: $TITLE"

      - name: No action needed
        if: steps.existing.outputs.count != '0'
        run: echo "An issue for fmt ${{ steps.latest.outputs.latest }} already exists; nothing to do."